Handsaw.



R w M m A BH L APPLIOATIOH FILED OCT. 12, 1906.

Patented Ma 4, 1909.

INVENTOR Gaza/if i l i" a ATTORNEY.

srarras earner crrrcn LAN DON BATOHLOR, OF LAWRENOEBURG, INDIANA.

HANDSAW.

Application filed October 12, 1906.

To all whom it may concern:

Be it known that I, LANDON BATOHLOR, a citizen of the United States, anda resident of the city of Lawrenceburg, in the county of Dearborn andState of Indiana, have invented certain new and useful Improvements inHandsaws, of which the following is a specification.

inc several lea ures of my invention and the various advantagesresulting from their use conjointly or otherwise will be apparent fromthe following description and claims.

In the accompanying drawings making part of this )lication, and in whichsimilar letters of ref rence indicate corresponding pang-Figure 1 is aview in perspective of a hand saw embodying my invention. In this view,the mid-portion of the saw frame and the mid-portion of the saw arebroken away and removed so as to bring the picture of the saw within thelimits of the sheet of drawing. In practice, the frame is ordinarily acontinuous piece, and of course the main portion of the saw will be inone piece. The saw blade is of any desired length. Fig. 2 is a view inperspective of the rear end of the saw-blade and the lower end of therear part of the saw-frame, and of the coupling devices for connectingthe rear end of the frame to the rear end of the saw-blade. Fig. 3 is aperspective view of the coupling which holds the screw rod of thesaw-blade and which is connected to the rear part of the saw frame. Fig.4 is a side elevation of the rear end of the saw frame. Fig. 5 is avertical, central cross section through the lower portion of the rearend of the saw frame, and

through the coupling lock piece and through the screw rod which islinked to the sawblade. This section is taken in the plane of the dottedline 5, 5, of Fig. 1. That face of the section is seen which facestoward the right in Fig. 1. 6 repesents a vertical central section ofthe rear portion of the saw frame and of the coupling piece in positionthereon. The screw rod is shown in elevation, in position within thecoupling lock piece, and the nut is shown in place on the screw. Fig. 7is a view in perspective of the hand saw ember ying my invention. Thisfigure is on a smaller scale than Fig. 1, and illustrates a mode oflocating the saw blade at an angle to the vertical plane of the sawframe.

Specification of Letters Patent.

Patented. May 4, 1909.

Serial No. 333,629.

I will now proceed to describe my invention in detail.

A indicates the frame of the saw. This frame is a narrow piece ofmaterial, usually of metal, and its general shape is somewhat that of abow. A indicates the back or main part of the frame A. The front endportion A bends at an angle to the back A The rear end portion A bendsfrom the back at an angle. The entire frame is preferably made in onepiece.

The handle B is connected to the rear portion of the saw frame, usuallyas shown, viz. to the upper portion of the part A", and to the adjacentpart of the back A The conncction is preferably made by rivets or screwswhich will not unscrew under ordi nary use of the saw.

C indicates the saw blade having suitable teeth C My coupling piece Dhas a part D which has a passage way E through it. The upper portion ofthis coupling piece has a slot F, but this slot is closed at the part13*, in the upper front part of the coupling, and at the lower portion Dof the part D This slot receives the lower portion of the rear end partA of the saw frame A. The part D has a rear inclination D. This part Dfits into a notch A of the frame part A*. The rear portion of this notchis preferably inclined at A so as the better to fit the inclination D ofthe part D of the coupling. The bottom end of the frame part A isinclined upward and rearward, which inclination is marked A In thepassageway E of the part D of the coupling is a screw rod H having ascrew thread H The forward end of this red has a slot H adapted toreceive the adjacent end of the saw-blade C. l l hen this end of thesaw-blade C is in position in the screw rod H, a pivot K of the rivetform or of other suit able kind connects the saw-blade C and the rod H.The saw-blade is free to move on the pivot and the screw rod H can makean angle with it whenever the sawlade and rod are not strained, ashereinafter mentioned.

A suitable nut M preferably of the thumbnut order having handles M M isadapted to screw onto the screw thread H of the screw rod H.

The front end of the saw-blade is suitably pivoted to the front portionA of the saw by a pivot P.

In using the mechanism described, I duly connect the saw-blade C at P tothe frame part A". I connect the screw rod H to the other end of thesaw-blade by the pivot K. I insert the screw rod H in the passageway E.I apply the coupling piece D to the lower end of the frame part A, sothat the latter enters the slot as shown in Fig. 2. The coupling piece Dmust now be inclined so that the rear end of the passageway E and therear end of the rod are higher than their respective front ends. Whilein this position, the coup lin iece is carried and slid up and the carti9 1 D can be and is put into the notch A of the part A. As soon as thepart D is put into the said notch, the coupling part D can be and ismoved so that the passageway E and the screw rod Iii are horizontal.Then the parts of the mechanism will respectively occupy the positionsshown in Figs. 1., 5 and 6.

The nut M, if not already partially screwed up on the rod H, is nowapplied thereto, and in either case it is now screwed forward, thustightening the parts. The coupling D, being in a stationary position onthe frame piece A every turn of the screw nut M tightens and finallystrains (as it is termed), that is, holds taut the saw-blade C and thescrew rod H.

In the front end of the eye piece, I provide the slots D D which arerespectively on opposite sides of the eye piece, but are in a commonplane.

When the saw-blade C, pivoted to the front end frame piece A and at rearto the rod H is being put in place, as soon as the rod H is passed intoand along in the passage E, the adjacent end of the saw-blade isintroduced into the slots D D and when the rod H i. drawn rearward byturning the nut M, the end portion of the saw-blade is drawn on in theslots D D until the saw-blade is fully strained. This prevents thesaw-blade from rotation.

The inclination or bevel A at the lower end of the frame part A isimportant, as it permits the part D (that is this eye piece) to beinclined, and the upper end of the coupling D to be moved forward, andthe part D thus removed from the notch A Then the coupling piece D canbe removed from the saw frame. But the coupling piece D cannot be thusinclined, so long as the saw-blade 1 and the screw rod H are strained.Therefore in order to remove the coupling, the nut M must be turned sothat the screw rod H and the saw-blade C are not held taut.

The coupling piece D is put into place on the frame piece A by reversingthe movements used in taking it off from the frame piece A The couplingpiece D holds the rod H and the saw-blade C very strongly and firmly inplace, and keeps them fully strained. It is successfully braced against,by and with the frame piece A It is readily and quickly applied to theframe piece A and as quickly removed. The rod H can be quickly put intothe passageway E of the eye piece D and as readily withdrawn.

Another marked advantage is that when the coupling has been put intoplace as illustrated. in Figs. 1 and 6, it will not slip out of placeand leave the frame piece A. Whether the nut is screwed up tight on therod H, or left on the rod H only partially screwed up, or is absentaltogether from the rod H, the coupling will not slip off the framepiece A. To have it come away from this frame piece A, the bottom of thecoupling must be moved back and be inclined up, and at the same time theupper front locking .piece D" ee moved forward and out of the notch A ofthe frame piece A. Then it can he slid down and off from the frame pieceA No lateral movement of the coupling D is permitted, because the lattermbraces the frame piece A the latter lying between the cheeks or sides DD of the part 3 of the coupling piece D.

My saw is adapted to perform the various functions, for which frame sawsof the class to which it belongs, are employed. In some cases, as inbutchers saws, etc, it becomes desirable to have the plane or width ofthe saw-blade at an angle to the general plane of the saw, viz.: of thescw frame. For e1 ample, such a position of the saw-blade 1s necessarvin sawing what are Known as resections. To enable the saw-blade to bethus located, I provide the eye piece D with slots D", each one of apair of slots being located. at the opposite side of the passageway E,and being in a common plane, the latter passing through the theoreticalcenter of the passageway E. Such pairs of slots are located in the eyepiece D at such angles as shall enable the saw-blade C to be located atthe desired angle. The sawblade C attached to the rod if asaforementipned is placed in position, its end at the rod if beinginserted in that pair of the slots D which are at the desired angle. Thenut M is then tightened and the rod H and sawblade C are strained inposition.

it will be understood that, at the end of the saw frame A, there is,when in such cases the saw-blade is turned at an angle to the plane ofthe saw frame, a suitable device fcr connecting the saw blade to thisend A, so that the blade will there be at the same angle relatively tothe sew frame 1t at the rear end A". One kind of such device is shown atthe end A of the saw frame, and

consists of the coupling piece D shown in Fig. 3, and of a rod 1 likerod H, but preferably without the screw thread H and without the thumbnut M, M M But this rod H has a slot similar to the slot H of the rod H,and a pivot K connecting the saw blade to the rod H The opposite end ofthe rod ll is provided with a head H or equivalent means to prevent therod H from sliding through the coupling piece D. The end A of the sawframe will be provided with the notch for receiving the part D of thecoupling D.

il hen desired, the bottom of the front end A of the saw frame may havethe inclination A When desired, the entire device consisting of thecoupling part D shown in the several figures and the rod H, H H", withpivot K and thumb nut M, M M may be employed at the front end as well asat the back end. Such application to either end or to both ends willobviously be mere reversal, or duplication.

The shape of the eye piece D may in cross section be diamond shaped, asshown in Figs. 1, 2 and 5, or be many sided, or round. The latter formis illustrated in Fig. 3.

ll hen slots such as D as well as the slots D are present in the eyepiece D then the said round shape shown in Fig. 3 is obviouslypreferable for it. 7

My improved coupling piece, described herein, may be used on the frontend of the saw frame, instead of the pivot P, when such. location of myinvention is desirable, and the pivot P be transferred and used at therear end, or as heretofore specified the coupling pieces of my inventionmay be present at both ends of the saw.

What I claim as new, and of my invention and desire to secure by LettersPatent, is

1. In a saw, a saw frame having the portion A, provided at the frontwith a notch A, and having its lower end inclined upward and rearward,in combination with 'a coupling-piece adapted below to hold the screwrod for engaging the saw blade, and,

provided above with slot F adapted to receive the lower part of theframe portion A, and further provided at its upper front portion with adetent-part D adapted to enter the notch A the coupling-piece having theback D which in use rests against the rear part of the frame piece Asubstantially as and for the purposes specified.

In a saw, the frame having the portion A provided at its front edgeportion with a notch A, the back of the notch being inclined as shown,the lower end of this frame portion being inclined from the front upwardtoward the rear, in combination with a coupling-piece adapted below tohold the screw red for engaging the saw-blade, and provided above withslot F adapted to receive the lower part of the frame portion A and alsoprovided abo vein front with a detent-p art D having an inclined end D,adapted to enter the notch A the coupling-piece having the back D whichrests against the part of the frame-piece A, substantially as and forthe purposes specified.

3. The combination of a saw frame having a back and two end pieces, eachmaking an angle with the said back, a saw blade, a sawstraining device,a coupling-piece, adapted to hold the saw-straining device and to engageone of these end pieces of the frame at its inner edge and at its outeredge, the frame having a stop at the inner edge of it which prevents theaccidental displacement of the coupling-piece, substantially as and forthe purposes specified.

4. The combination of a saw frame, having a back and two end pieces,each end piece making an angle with the back, a screw rod, acoupling-piece adapted to hold the screw rod, and having a frontprojection adapted to engage the end piece, shaped to engage the frontface of the end piece, and the coupling piece adapted to be inclined forremoval, or for application, and the coupling provided with means forholding it laterally to the said end piece of the frame, substantiallyas and for the purposes specified.

5. In a saw, the frame having the portion A, provided at its front edgeportion with a notch A the back of the notch being inclined as shown,the lower end of this rear frame portion being inclined from the frontupward toward the rear, in combination with a coupling-piece adaptedbelow to hold the screw-rod for engaging the saw-blade, and providedabove with slot F adapted to receive the lower part of the frame portionA and also provided above in front with the detent-part D, having aninclined end D", adapted to enter the notch A the coupling piece havingthe back D which rests against the rear part of the frame-piece A*, thecoupling-piece having the slits D to receive the adjacent end of thesaw, substantially as and for the purposes specified.

6. In a saw, the combination of the frame having a portion A provided atits front edge with the notch A and having its lower end inclined upwardand rearward, a straining device connected to the saw-blade, and acoupling-piece for holding the straining device, this coupling-piecehaving at its upper front portion a detent-part D adapted to enter thenotch and having at its rear the detent-part D adapted to engage withthe frame, the front part of the coupling-piece being provided withslits D and with slots 1), at an angle to the plane of the slits D andmeans for retaining the coupling piece from lateral displacement,substantially as and for the purposes specified.

7. In a saw, the combination of the frame having a portion A, providedat its front edge with the notch A and having its lower end inclinedupward and rearward, a strain- 1 ing device connected to the saw-blade,and a coupling-piece for holding the straining device, thiscoupling-piece provided With a slot for receiving the frame, and havingat its upper front portion a letentpart adapted to enter the notch. Aand having at its rear the detent-part D adapted to engage with theframe, the front part of the couplingpiece being provided With slits,and With slots D at an angle to the plane of the slits D, substantiallyas and for the purposes specified.

8. In a saw, having the portion A and the portion A each of saidportions A and A respectively provided at its inner edge With a notch,and tWo coupling-pieces, one engaging the notch of the frame portion Aand the other engaging the notch of the frame portion A, eachcoupling-piece having a rod rotatable within it, and having also radialslots D parallel to its length, substantially as and for the purposesspecified.

9. In a saw, a saW frame, and two end coupling-pieces, separable fromthe saw frame, and each adapted to engage the saw frame, rods forattachment to the saW blade, and respectively held Within theirrespective I l l l l l l l l 1 l 1 l 1 ii 1 l l l i adjacent couplings,means being present for retracting one of said rods, and means forenabling the plane of the saw to be located at an angle relative to theplane of the saw fraine, substantially as and for the purposesspecified.

10. In a saw, a saw frame, and tWo end coupling-pieces, separable fromthe saW frame, and each adapted to engage the saw 3 frame, rods forattachment to the saw blade, and respectively held Within theirrespective adjacent couplings, means being present for retracting one ofsaid rods, each coupling pro *ided in the eye thereof With radial slots,4 parallel to the length of the coupling for enabling the plane of thesaw blade to be at an angle to the plane of the saw frame, substantiallyas and for the purposes specified.

In Witness whereof, I have set my name to this specification in thepresence of two subscribing Witnesses.

hi LANDON 5 BATCHLOR.

mark. Vv itnesses JOHN E. FITZPATRIoK, K. SMITH.

